Two assailants reportedly shot the boy on his porch and fled the scene by car, leaving the boy to die in his front hallway.

Earlier, about 6:40 p.m., a 15-year-old boy was fatally shot in the 1600 block of South Ridgeway Avenue in the Little Village neighborhood, police said.

A shooter opened fire after shoting a gang slogan, striking the 15-year-old in the torso, according to police.

Detectives are investigating both homicides but did not have any suspects in custody as of Saturday morning.

About 4:05 p.m., a 16-year-old boy was shot in the thigh and a 17-year-old boy suffered a graze wound to the chest in the 400 block of East 82nd Street in the Chatham neighborhood, said Chicago Police News Affairs Officer Veejay Zala.

The younger victim was taken to Adocate Christ Medical Center in Oak Lawn in serious-to-critical condition, and the older victim was taken to Jackson Park Hospital in good-to-fair condition, according to the Chicago Fire Department's media office.

Police did not have details of the attack.

Earlier, a 17-year-old boy was shot and seriously wounded in the Gresham neighborhood on the South Side, according to police and the Chicago Fire Department.

Someone in a passing vehicle opened fire and shot the 17-year-old boy in the arm and torso in the 2100 block of West 85th Street, according to News Affairs Officer Veejay Zala.

On the North Side earlier in the afternoon, a man was shot and wounded in the Buena Park neighborhood, authorities said.

The victim was taken from the 700 block of West Gordon Terrace to Weiss Memorial Hospital in fair-to-serious condition following the shooting a little before 1 p.m., said Chicago Fire Department spokesman Will Knight.

The man was shot in the buttocks, said Police News Affairs Officer Michael Sullivan.

Initial reports were of several shots fired near Clarendon and Montrose avenues at 12:53 p.m., and a Cook County sheriff's officer calling for assistance after finding someone at the scene a few minutes later, said Chicago Police News Affairs Officer John Mirabelli.

The sheriff's officer was a civil process server, and he heard shots and found the shooting victim nearby, said sheriff's spokeswoman Sophia Ansari.

The officer stayed with the victim and another person who was with him and called for an ambulance and police, Ansari said.